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Finding the Fourth Proportional to 638,567.70, 880,760.30 and 434,255.46

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Solution

The fourth proportional to 638,567.70, 880,760.30 and 434,255.46 is: 598,957.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,567.70 : 880,760.30 = 434,255.46 : x
  2. Step 2: Convert to fraction form
    638,567.70/880,760.30 = 434,255.46/x
  3. Step 3: Cross multiply
    638,567.70x = 880,760.30 × 434,255.46
  4. Step 4: Simplify right side
    638,567.70x = 382,474,967,054.96
  5. Step 5: Solve for x
    x = 382,474,967,054.96/638,567.70
  6. Step 6: Final answer
    x = 598,957.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.